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WO2006053121A2 - Certaines imidazo[1,2-a] pyrazin-8-ylamines et les procédés de fabrication et d'utilisation correspondants - Google Patents

Certaines imidazo[1,2-a] pyrazin-8-ylamines et les procédés de fabrication et d'utilisation correspondants Download PDF

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Publication number
WO2006053121A2
WO2006053121A2 PCT/US2005/040730 US2005040730W WO2006053121A2 WO 2006053121 A2 WO2006053121 A2 WO 2006053121A2 US 2005040730 W US2005040730 W US 2005040730W WO 2006053121 A2 WO2006053121 A2 WO 2006053121A2
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WIPO (PCT)
Prior art keywords
chosen
phenyl
methyl
pyrazin
chemical entity
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PCT/US2005/040730
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English (en)
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WO2006053121A3 (fr
Inventor
Kevin S. Currie
Jeffrey E. Kropf
James W. Darrow
Robert W. Desimone
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Cgi Pharmaceuticals, Inc.
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Priority claimed from US10/985,023 external-priority patent/US20050288295A1/en
Priority to AU2005304473A priority Critical patent/AU2005304473A1/en
Priority to JP2007541312A priority patent/JP2008519843A/ja
Priority to CA002587192A priority patent/CA2587192A1/fr
Priority to BRPI0517619-0A priority patent/BRPI0517619A/pt
Priority to MX2007005643A priority patent/MX2007005643A/es
Application filed by Cgi Pharmaceuticals, Inc. filed Critical Cgi Pharmaceuticals, Inc.
Priority to NZ555681A priority patent/NZ555681A/en
Priority to EP05826215A priority patent/EP1812442A2/fr
Priority to RU2007121508/04A priority patent/RU2007121508A/ru
Publication of WO2006053121A2 publication Critical patent/WO2006053121A2/fr
Publication of WO2006053121A3 publication Critical patent/WO2006053121A3/fr
Priority to IL183110A priority patent/IL183110A0/en
Priority to NO20072932A priority patent/NO20072932L/no

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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/437—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system containing a five-membered ring having nitrogen as a ring hetero atom, e.g. indolizine, beta-carboline
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A61P35/02—Antineoplastic agents specific for leukemia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/02—Immunomodulators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/02—Immunomodulators
    • A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P37/00—Drugs for immunological or allergic disorders
    • A61P37/08—Antiallergic agents

Definitions

  • Protein kinases the largest family of human enzymes, encompass well over 500 proteins.
  • Bruton's Tyrosine Kinase (Btk) is a member of the Tec family of tyrosine kinases, and is a regulator of early B-cell development as well as mature B- cell activation, signaling and survival.
  • Btk-deficient mouse models For example, in standard murine preclinical models of systemic lupus erythematosus (SLE), Btk deficiency has been shown to result in a marked amelioration of disease progression. Moreover, Btk deficient mice are also resistant to developing collagen-induced arthritis and are less susceptible to Staphylococcus- induced arthritis.
  • SLE systemic lupus erythematosus
  • a large body of evidence supports the role of B-cells and the humoral immune system in the pathogenesis of autoimmune and/or inflammatory diseases.
  • Protein-based therapeutics (such as Rituxan) developed to deplete B-cells, represent an important approach to the treatment of a number of autoimmune and/or inflammatory diseases. Because of Btk's role in B-cell activation, inhibitors of Btk can be useful as inhibitors of B-cell mediated pathogenic activity (such as autoantibody production).
  • inhibition of Btk activity can be useful for the treatment of allergic disorders and/or autoimmune and/or inflammatory diseases including, but not limited to: SLE, rheumatoid arthritis, multiple vasculitides, idiopathic thrombocytopenic purpura (ITP), myasthenia gravis, allergic rhinitis, multiple sclerosis (MS), transplant rejection, Type I diabetes, membranous nephritis, inflammatory bowel disease, autoimmune hemolytic anemia, autoimmune thyroiditis, cold and warm agglutinin diseases, Evan's syndrome, hemolytic uremic syndrome/thrombotic thrombocytopenic purpura (HUS/TTP), sarcoidosis, Sjogren's syndrome, peripheral neuropathies (e.g. Guillain-Barre syndrome), pemphigus vulgaris, and asthma.
  • SLE rheumatoid arthritis, multiple vasculitides, idiopathic thrombocytopenic purpura (ITP
  • Btk has been reported to play a role in controlling B-cell survival in certain B-cell cancers.
  • Btk has been shown to be important for the survival of BCR-Abl-positive B-cell acute lymphoblastic leukemia cells.
  • inhibition of Btk activity can be useful for the treatment of B-cell lymphoma and leukemia.
  • R 1 is chosen from optionally substituted phenylene, optionally substituted pyridylidene, optionally 2-oxo-l,2-dihydropyridinyl,
  • * indicates the point of attachment to the group -L-G and the broken bond indicates the point of attachment to the amino group; and wherein X 1 is chosen from N and CR 7 ; X 2 is chosen from N and CR 7 ; and X 3 is chosen from N and CR 7 ; wherein no more than one of X 1 , X 2 , and X 3 is N and wherein R 7 is chosen from hydrogen, hydroxy, cyano, halo, optionally substituted lower alkyl, and optionally substituted lower alkoxy; L is chosen from a covalent bond, optionally substituted Ci-C 4 alkylene, -O-, -O-
  • G is chosen from hydrogen, halo, hydroxy, alkoxy, nitro, optionally substituted alkyl, -NRi 6 R 17 , optionally substituted heterocycloalkyl, optionally substituted cycloalkyl, optionally substituted aryl, and optionally substituted heteroaryl
  • T, V, and W are chosen from C and N and U is chosen from -CH and N, provided that at most one of T, U, V and W is N;
  • R 10 and R 11 are independently chosen from hydrogen, C 1 -C 6 alkyl, and C 1 -C 6 haloalkyl;
  • R 12 , R 13 , R 14 , and R 15 are each independently chosen from hydrogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, phenyl, substituted phenyl chosen from mono-, di-, and tri- substituted phenyl wherein the substituents are independently chosen from hydroxy, nitro, cyano, amino, halo, C 1 -C 6 alkyl, C 1 -C 6 alkoxy, (C 1 -C 6 alkyloxy)d-C 6 alkoxy, C 1 -C 6 perfluoroalkyl, C 1 -C 6 perfluoroalkoxy, mono- (C 1 -C 6 alkyl)amino, di(Ci-C 6 alkyl)amino, and 3TnInO(C 1 -C 6 alkyl), heteroaryl, and substituted heteroaryl chosen from mono-, di-, and tri- substituted heteroaryl wherein the substituents are independently chosen from hydroxy
  • R 5 is chosen from optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl and optionally substituted heteroaryl;
  • R 6 is chosen from hydrogen, optionally substituted alkyl, cycloalkyl, and heterocycloalkyl.
  • a pharmaceutical composition comprising at least one chemical entity described herein, together with at least one pharmaceutically acceptable vehicle chosen from carriers, adjuvants, and excipients.
  • a packaged pharmaceutical composition comprising a pharmaceutical composition comprising at least one chemical entity described herein, together with at least one pharmaceutically acceptable vehicle chosen from carriers, adjuvants, and excipients; and instructions for using the composition to treat a patient suffering from a disease responsive to inhibition of Btk activity.
  • a method for treating a patient having a disease chosen from cancer, autoimmune diseases, inflammatory diseases, acute inflammatory reactions, and allergic disorders comprising administering to the patient an effective amount of at least one chemical entity described herein.
  • a method for increasing sensitivity of cancer cells to chemotherapy comprising administering to a patient undergoing chemotherapy with a chemotherapeutic agent an amount of at least one chemical entity described herein, sufficient to increase the sensitivity of cancer cells to the chemotherapeutic agent.
  • Also provided is a method for inhibiting ATP hydrolysis comprising contacting cells expressing Btk with at least one chemical entity described herein in an amount sufficient to detectably decrease the level of ATP hydrolysis in vitro.
  • Also provided is a method for determining the presence of Btk in a sample comprising contacting the sample with at least one chemical entity described herein under conditions that permit detection of Btk activity, detecting a level of Btk activity in the sample, and therefrom determining the presence or absence of Btk in the sample.
  • Also provided is a method for inhibiting B-cell activity comprising contacting cells expressing Btk with at least one chemical entity described herein, in an amount sufficient to detectably decrease B-cell activity in vitro.
  • Formula 1 includes all subformulae thereof.
  • Formula 1 includes compounds of Formulae 1 to 4. ⁇
  • a dash (“-") that is not between two letters or symbols is used to indicate a point of attachment for a substituent.
  • -CONH 2 is attached through the carbon atom.
  • alkyl encompasses both “alkyl” and
  • alkyl encompasses straight chain and branched chain having the indicated number of carbon atoms, usually from 1 to 20 carbon atoms, for example 1 to 8 carbon atoms, such as 1 to 6 carbon atoms.
  • Q-Coalkyl encompasses both straight and branched chain alkyl of from 1 to 6 carbon atoms.
  • alkyl groups include methyl, ethyl, propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, pentyl, 2-pentyl, isopentyl, neopentyl, hexyl, 2-hexyl, 3-hexyl, 3-methylpentyl, and the like.
  • Alkylene is another subset of alkyl, referring to the same residues as alkyl, but having two points of attachment. Alkylene groups will usually have from 2 to 20 carbon atoms, for example 2 to 8 carbon atoms, such as from 2 to 6 carbon atoms.
  • Co alkylene indicates a covalent bond and C 1 alkylene is a methylene group.
  • alkyl residue having a specific number of carbons all geometric isomers having that number of carbons are intended to be encompassed; thus, for example, “butyl” is meant to include n-butyl, sec-butyl, isobutyl and t-butyl; “propyl” includes n-propyl and isopropyl.
  • “Lower alkyl” refers to alkyl groups having one to four carbons.
  • Alkenyl refers to an unsaturated branched or straight-chain alkyl group having at least one carbon-carbon double bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkene.
  • the group may be in either the cis or trans conformation about the double bond(s).
  • Typical alkenyl groups include, but are not limited to, ethenyl; propenyls such as prop-1-en-l-yl, prop-l-en-2-yl, prop-2-en-l-yl (allyl), prop-2-en-2-yl, cycloprop-1-en-l-yl; cycloprop-2-en-l-yl; butenyls such as but-1-en-l-yl, but-l-en-2-yl, 2-methyl-prop-l-en-l-yl, but-2-en-l-yl, but-2-en-l-yl, but-2-en-2-yl, buta-l,3-dien-l-yl, buta-l,3-dien-2-yl, cyclobut-1-en-l-yl, cyclobut-l-en-3-yl, cyclobuta-l,3-dien-l-yl; and the like.
  • an alkenyl group has from 2 to 20 carbon atoms and in other embodiments, from 2 to 6 carbon atoms.
  • Alkynyl refers to an unsaturated branched or straight-chain alkyl group having at least one carbon-carbon triple bond derived by the removal of one hydrogen atom from a single carbon atom of a parent alkyne.
  • Typical alkynyl groups include, but are not limited to, ethynyl; propynyls such as prop-1-yn-l-yl, prop-2-yn-l-yl; butynyls such as but-1-yn-l-yl, but-l-yn-3-yl, but-3-yn-l-yl; and the like.
  • an alkynyl group has from 2 to 20 carbon atoms and in other embodiments, from 3 to 6 carbon atoms.
  • Cycloalkyl indicates a non-aromatic carbocyclic ring, usually having from 3 to 7 ring carbon atoms.
  • the ring may be saturated or have one or more carbon-carbon double bonds.
  • Examples of cycloalkyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, and cyclohexenyl, as well as bridged and caged saturated ring groups such as norbornane.
  • alkoxy is meant an alkyl group of the indicated number of carbon atoms attached through an oxygen bridge such as, for example, methoxy, ethoxy, propoxy, isopropoxy, n-butoxy, sec-butoxy, tert-butoxy, pentoxy, 2-pentyloxy, isopentoxy, neopentoxy, hexoxy, 2-hexoxy, 3-hexoxy, 3-methylpentoxy, and the like.
  • Alkoxy groups will usually have from 1 to 6 carbon atoms attached through the oxygen bridge. "Lower alkoxy” refers to alkoxy groups having one to four carbons.
  • R a and Rb are independently chosen from hydrogen and alkyl groups of the indicated number of carbon atoms, provided that R a and R b are not both hydrogen.
  • alkylthio is meant an alkyl group of the indicated number of carbon atoms attached through a sulfur bridge.
  • Acyl refers to the groups (alkyl)-C(O)-; (cycloalkyl)-C(O)-; (aryl)-
  • Acyl groups have the indicated number of carbon atoms, with the carbon of the keto group being included in the numbered carbon atoms.
  • alkoxycarbonyl is meant an ester group of the formula
  • a Q-Qalkoxycarbonyl group is an alkoxy group having from 1 to 6 carbon atoms attached through its oxygen to a carbonyl linker.
  • amino is meant the group -NH 2 .
  • “Mono- and di-(alkyl)amino” encompasses secondary and tertiary alkyl amino groups, wherein the alkyl groups are as defined above and have the indicated number of carbon atoms. The point of attachment of the alkylamino group is on the nitrogen. Examples of mono- and di-alkylamino groups include ethylamino, dimethylamino, and methyl-propyl-amino.
  • amino(alkyl) is meant an amino group linked to an alkyl group having the indicated number of carbons.
  • hydroxyalkyl is a hydroxy group linked to an alkyl group.
  • aminocarbonyl refers to the group -CONR b R c , where
  • R b is chosen from H, optionally substituted C 1 -C 6 alkyl, optionally substituted aryl, and optionally substituted heteroaryl;
  • R° is independently chosen from hydrogen and optionally substituted C 1 -C 4 alkyl
  • R b and R c taken together with the nitrogen to which they are bound, form an optionally substituted 5- to 7-membered nitrogen-containing heterocycloalkyl which optionally includes 1 or 2 additional heteroatoms selected from O, N, and S in the heterocycloalkyl ring; where each substituted group is independently substituted with one or more substituents independently selected from C 1 -C 4 alkyl, aryl, heteroaryl, 3TyI-C 1 -C 4 alkyl-, heteroaryl-Q-Q alkyl-, C 1 -C 4 haloalkyl-, -OC 1 -C 4 alkyl, -OC 1 -C 4 alkylphenyl, -C 1 -C 4 alkyl-OH, -OC 1 -C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(C 1 -C 4 alkyl)(C r C
  • 5- and 6-membered carbocyclic aromatic rings for example, benzene; bicyclic ring systems wherein at least one ring is carbocyclic and aromatic, for example, naphthalene, indane, and tetralin; and tricyclic ring systems wherein at least one ring is carbocyclic and aromatic, for example, fluorene.
  • aryl includes 5- and 6-membered carbocyclic aromatic rings fused to a 5- to 7-membered cycloalkyl ring or a 5- to 7-membered heterocycloalkyl ring containing 1 or more heteroatoms chosen from N, O, and S.
  • bicyclic ring systems wherein only one of the rings is a carbocyclic aromatic ring, the point of attachment may be at the carbocyclic aromatic ring or the other ring.
  • Bivalent radicals formed from substituted benzene derivatives and having the free valences at ring atoms are named as substituted phenylene radicals.
  • Bivalent radicals derived from univalent polycyclic hydrocarbon radicals whose names end in "-yl” by removal of one hydrogen atom from the carbon atom with the free valence are named by adding "-idene” to the name of the corresponding univalent radical, e.g., a naphthyl group with two points of attachment is termed naphthylidene.
  • Aryl does not encompass or overlap in any way with heteroaryl, separately defined below. Hence, if one or more carbocyclic aromatic rings is fused with a heterocycloalkyl aromatic ring, the resulting ring system is heteroaryl, not aryl, as defined herein.
  • aryloxy refers to the group -O-aryl.
  • halo includes fiuoro, chloro, bromo, and iodo, and the term
  • halogen includes fluorine, chlorine, bromine, and iodine.
  • Haloalkyl indicates alkyl as defined above having the specified number of carbon atoms, substituted with 1 or more halogen atoms, up to the maximum allowable number of halogen atoms. Examples of haloalkyl include, but are not limited to, trifluoromethyl, difluoromethyl, 2-fluoroethyl, and penta- fluoroethyl.
  • Heteroaryl encompasses:
  • heteroaryl includes a 5- to 7-membered heterocycloalkyl, 'aromatic ring fused to a 5- to 7-membered cycloalkyl or heterocycloalkyl ring.
  • bicyclic heteroaryl ring systems wherein only one of the rings contains one or more heteroatoms, the point of attachment may be at either ring.
  • the total number of S and O atoms in the heteroaryl group exceeds 1, those heteroatoms are not adjacent to one another.
  • the total number of S and O atoms in the heteroaryl group is not more than 2.
  • the total number of S and O atoms in the aromatic heterocycle is not more than 1.
  • heteroaryl groups include, but are not limited to, (as numbered from the linkage position assigned priority 1), 2-pyridyl, 3-pyridyl, 4-pyridyl, 2,3-pyrazinyl, 3,4-pyrazinyl, 2,4- pyrimidinyl, 3,5-pyrimidinyl, 2,3-pyrazolinyl, 2,4-imidazolinyl, isoxazolinyl, oxazolinyl, thiazolinyl, thiadiazolinyl, tetrazolyl, thienyl, benzothiophenyl, furanyl, benzofuranyl, benzoimidazolinyl, indolinyl, pyridizinyl, triazolyl, quinolinyl, pyrazolyl, and 5,6,7,8-tetrahydroisoquinoline.
  • Bivalent radicals derived from univalent heteroaryl radicals whose names end in "-yl” by removal of one hydrogen atom from the atom with the free valence are named by adding "-idene" to the name of the corresponding univalent radical, e.g., a pyridyl group with two points of attachment is a pyridylidene.
  • Heteroaryl does not encompass or overlap with aryl, cycloalkyl, or heterocycloalkyl, as defined herein
  • heteroaryl also includes ring systems substituted with one or more oxide (-0 " ) substituents, such as pyridinyl N-oxides.
  • heteroaryl and alkyl are as defined herein, and the point of attachment is on the alkyl group. This term encompasses, but is not limited to, pyridylmethyl, thiophenylmethyl, and (pyrrolyl)l -ethyl.
  • heterocycloalkyl is meant a single, non-aromatic ring, usually with 3 to 7 ring atoms, containing at least 2 carbon atoms in addition to 1-3 heteroatoms independently selected from oxygen, sulfur, and nitrogen, as well as combinations comprising at least one of the foregoing heteroatoms.
  • the ring may be saturated or have one or more carbon-carbon double bonds.
  • Suitable heterocycloalkyl groups include, for example (as numbered from the linkage position assigned priority 1), 2-pyrrolinyl, 2,4-imidazolidinyl, 2,3-pyrazolidinyl, 2-piperidyl, 3-piperidyl, A- piperdyl, and 2,5-piperzinyl.
  • Morpholinyl groups are also contemplated, including 2- morpholinyl and 3 -morpholinyl (numbered wherein the oxygen is assigned priority 1).
  • Heterocycloalkyl also includes bicyclic ring systems wherein one non-aromatic ring, usually with 3 to 7 ring atoms, contains at least 2 carbon atoms in addition to 1-3 heteroatoms independently selected from oxygen, sulfur, and nitrogen, as well as combinations comprising at least one of the foregoing heteroatoms; and the other ring, usually with 3 to 7 ring atoms, optionally contains 1-3 heteratoms independently selected from oxygen, sulfur, and nitrogen and is not-aromatic.
  • modulation refers to a change in kinase activity as a direct or indirect response to the presence of compounds of Formula 1, relative to the activity of the kinase in the absence of the compound.
  • the change may be an increase in activity or a decrease in activity, and may be due to the direct interaction of the compound with the kinase, or due to the interaction of the compound with one or more other factors that in turn affect kinase activity.
  • the presence of the compound may, for example, increase or decrease kinase activity by directly binding to the kinase, by causing (directly or indirectly) another factor to increase or decrease the kinase activity, or by (directly or indirectly) increasing or decreasing the amount of kinase present in the cell or organism.
  • sulfanyl includes the groups: -S-( optionally substituted
  • sulfanyl includes the group C 1 -C 6 alkylsulfanyl.
  • sulfonyl includes the groups: -S(O 2 )-(optionally substituted (d-C ⁇ alkyl), -S(O 2 )-optionally substituted aryl), -S(O 2 )-optionally substituted heteroaryl), -S(O 2 )-(optionally substituted heterocycloalkyl) ,-S(O 2 )-(optionally substituted alkoxy), -S(O 2 )-optionally substituted aryloxy), -S(O 2 )-optionally substituted heteroaryloxy), -S(O 2 )-(optionally substituted heterocyclyloxy); and -S(O 2 )-(optionally substituted amino).
  • substituted means that any one or more hydrogens on the designated atom or group is replaced with a selection from the indicated group, provided that the designated atom's normal valence is not exceeded.
  • substituents and/or variables are permissible only if such combinations result in stable compounds or useful synthetic intermediates.
  • a stable compound or stable structure is meant to imply a compound that is sufficiently robust to survive isolation from a reaction mixture, and subsequent formulation as an agent having at least practical utility.
  • substituents are named into the core structure. For example, it is to be understood that when (cycloalkyl)alkyl is listed as a possible substituent, the point of attachment of this substituent to the core structure is in the alkyl portion.
  • substituted alkyl, cycloalkyl, aryl, heterocycloalkyl, and heteroaryl refer respectively to alkyl, cycloalkyl, aryl, heterocycloalkyl, and heteroaryl wherein one or more (such as up to 5, for example, up to 3) hydrogen atoms are replaced by a substituent independently chosen from:
  • R b is chosen from H, optionally substituted C 1 -C 6 alkyl, optionally substituted aryl, and optionally substituted heteroaryl;
  • R c is independently chosen from hydrogen and optionally substituted C 1 -C 4 alkyl; or
  • R b andR c and the nitrogen to which they are attached, form an optionally substituted heterocycloalkyl group; and where each optionally substituted group is unsubstituted or independently substituted with one or more, such as one, two, or three, substituents independently selected from C 1 -C 4 alkyl, aryl, heteroaryl, aryl-CrC 4 alkyl-, heteroaryl-Ci-C 4 alkyl-, C 1 -C 4 haloalkyl-, -OC 1 -C 4 alkyl, -OC 1 -C 4 alkylphenyl, -C 1 -C 4 alkyl-OH, -OC 1 -C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(C 1 -C 4 alkyl)(Ci-C 4 alkyl), -NH(C 1 -C 4 alkyl), -
  • substituted acyl refers to the groups (substituted alkyl)-
  • substituted alkyl, cycloalkyl, aryl, heteroaryl, and heterocycloalkyl refer respectively to alkyl, cycloalkyl, aryl, heteroaryl, and heterocycloalkyl wherein one or more (such as up to 5, for example, up to 3) hydrogen atoms are replaced by a substituent independently chosen from: -R a , -OR b , -0(C 1 -C 2 alkyl)O- (e.g., methylenedioxy-), -SR b , guanidine, guanidine wherein one or more
  • R b is chosen from H, optionally substituted C 1 -C 6 alkyl, optionally substituted aryl, and optionally substituted heteroaryl;
  • R c is independently chosen from hydrogen and optionally substituted C 1 -C 4 alkyl; or
  • R b andR c and the nitrogen to which they are attached, form an optionally substituted heterocycloalkyl group; and where each optionally substituted group is unsubstituted or independently substituted with one or more, such as one, two, or three, substituents independently selected from C 1 -C 4 alkyl, aryl, heteroaryl, aryl-C 1 -C 4 alkyl-, heteroaryl-Ci-C 4 alkyl-, C 1 -C 4 haloalkyl-, -OC 1 -C 4 alkyl, -OC 1 -C 4 alkylphenyl, -C 1 -C 4 alkyl-OH, -OC 1 -C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(C 1 -C 4 alkyl)(C r C 4 alkyl), -NH(C 1 -C 4 alkyl
  • R b is chosen from H, optionally substituted C 1 -C 6 alkyl, optionally substituted aryl, and optionally substituted heteroaryl;
  • R andR c and the nitrogen to which they are attached, form an optionally substituted heterocycloalkyl group; and where each optionally substituted group is unsubstituted or independently substituted with one or more, such as one, two, or three, substituents independently selected from C 1 -C 4 alkyl, aryl, heteroaryl, 8TyI-C 1 -C 4 alkyl-, heteroaryl-Ci-C 4 alkyl-, C 1 -C 4 haloalkyl-, -Od-C 4 alkyl, -OCi-C 4 alkylphenyl, -Ci-C 4 alkyl-OH, -OCi-C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(Ci-C 4 alkyl)(Ci-C 4 alkyl), -NH(C 1 -C 4 alkyl), -N(Ci
  • substituted alkoxycarbonyl refers to the group (substituted alkyl)-O-C(O)- wherein the group is attached to the parent structure through the carbonyl functionality and wherein substituted refers to alkyl wherein one or more (such as up to 5, for example, up to 3) hydrogen atoms are replaced by a substituent independently chosen from:
  • R° is independently chosen from hydrogen and optionally substituted C 1 -C 4 alkyl
  • substituted amino refers to the group -NHR d or -NR d R e wherein R d is chosen from: hydroxy, optionally substitued alkoxy, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted acyl, optionally substituted aryl, optionally substituted heterdaryl, optionally substituted heterocycloalkyl, alkoxycarbonyl, sulfmyl and sulfonyl, and wherein R e is chosen from: optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted acyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocycloalkyl, alkoxycarbonyl, sulfmyl and sulfonyl, and wherein substituted alkyl, cycloalkyl, aryl, heterocycloalkyl, and heteroaryl refer respectively to al
  • guanidine guanidine wherein one or more of the guanidine hydrogens are replaced with a lower- alkyl group, -NR b R c , halo, cyano, nitro, -COR b , -CO 2 R b , -CONR b R c , -OCOR b , -OCO 2 R a , -OCONR b R c , -NR c COR b , -NR 0 CO 2 R 3 , -NR c CONR b R c , -CO 2 R b , -CONR b R c , -NR c COR b , -SOR a , -SO 2 R 3 , -SO 2 NR b R
  • R b andR c and the nitrogen to which they are attached, form an optionally substituted heterocycloalkyl group; and where each optionally substituted group is unsubstituted or independently substituted with one or more, such as one, two, or three, substituents independently selected from Ci-C 4 alkyl, aryl, heteroaryl, aryl-Ci-C 4 alkyl-, heteroaryl-Ci-C 4 alkyl-, Ci-C 4 haloalkyl-, -OC 1 -C 4 alkyl, -OCi-C 4 alkylphenyl, -C r C 4 alkyl-OH, -OC 1 -C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(C 1 -C 4 alkyl)(d-C 4 alkyl), -NH(C 1 -C 4 alkyl), -N(C 1 -
  • substituted amino also refers to N-oxides of the groups —
  • N-oxides can be prepared by treatment of the corresponding amino group with, for example, hydrogen peroxide or m- chloroperoxybenzoic acid.
  • the person skilled in the art is familiar with reaction conditions for carrying out the N-oxidation.
  • guanidine guanidine wherein one or more of the guanidine hydrogens are replaced with a lower- alkyl group, -NR b R c , halo, cyano, nitro, -C0R b , -CO 2 R b , -C0NR b R°, -OCOR b , -0C0 2 R a , -0C0NR b R c , -NR c C0R b , -NR c C0 2 R a , -NR c C0NR b R c , -CO 2 R b , -C0NR b R c , -NR c COR b , -SOR a , -SO 2 R a ,
  • R b is chosen from H, optionally substituted C 1 -C 6 alkyl, optionally substituted aryl, and optionally substituted heteroaryl;
  • R c is independently chosen from hydrogen and optionally substituted C 1 -C 4 alkyl; or
  • R b andR c and the nitrogen to which they are attached, form an optionally substituted heterocycloalkyl group; and where each optionally substituted group is unsubstituted or independently substituted with one or more, such as one, two, or three, substituents independently selected from C 1 -C 4 alkyl, aryl, heteroaryl, aryl-Q-Q alkyl-, heteroaryl-d-C 4 alkyl-, C 1 -C 4 haloalkyl-, -OC 1 -C 4 alkyl, -OC 1 -C 4 alkylphenyl, -C 1 -C 4 alkyl-OH, -OC 1 -C 4 haloalkyl, halo, -OH, -NH 2 , -C 1 -C 4 alkyl-NH 2 , -N(C 1 -C 4 alkyl)(C r C 4 alkyl), -NH(C 1 -C 4 alkyl), -N
  • Compounds of Formula 1 include, but are not limited to, optical isomers of compounds of Formula 1, racemates, and other mixtures thereof, hi those situations, the single enantiomers or diastereomers, i.e., optically active forms, can be obtained by asymmetric synthesis or by resolution of the racemates. Resolution of the racemates can be accomplished, for example, by conventional methods such as crystallization in the presence of a resolving agent, or chromatography, using, for example a chiral high-pressure liquid chromatography (HPLC) column.
  • compounds of Formula 1 include Z- and E- forms (or cis- and trans- forms) of compounds with carbon-carbon double bonds. Where compounds of Formula 1 exists in various tautomeric forms, chemical entities of the present invention include all tautomeric forms of the compound.
  • Chemical entities of the present invention include, but are not limited to compounds of Formula 1 and all pharmaceutically acceptable forms thereof.
  • Pharmaceutically acceptable forms of the compounds recited herein include pharmaceutically acceptable salts, solvates, crystal forms (including polymorphs and clathrates), chelates, non-covalent complexes, prodrugs, and mixtures thereof.
  • the compounds described herein are in the form of pharmaceutically acceptable salts.
  • the terms "chemical entity” and “chemical entities” also encompass pharmaceutically acceptable salts, solvates, chelates, non- covalent complexes, prodrugs, and mixtures.
  • pharmaceutically acceptable cations include, but are not limited to sodium, potassium, calcium, aluminum, lithium, and ammonium.
  • the free base can be obtained by basifying a solution of the acid salt.
  • an addition salt, particularly a pharmaceutically acceptable addition salt may be produced by dissolving the free base in a suitable organic solvent and treating the solution with an acid, in accordance with conventional procedures for preparing acid addition salts from base compounds. Those skilled in the art will recognize various synthetic methodologies that may be used to prepare non-toxic pharmaceutically acceptable addition salts.
  • prodrugs also fall within the scope of chemical entities, for example ester or amide derivatives of the compounds of Formula 1.
  • the term "prodrugs” includes any compounds that become compounds of Formula 1 when administered to a patient, e.g., upon metabolic processing of the prodrug.
  • Examples of prodrugs include, but are not limited to, acetate, formate, and benzoate and like derivatives of functional groups (such as alcohol or amine groups) in the compounds of Formula 1.
  • solvate refers to the chemical entity formed by the interaction of a solvent and a compound. Suitable solvates are pharmaceutically acceptable solvates, such as hydrates, including monohydrates and hemi-hydrates.
  • chelate refers to the chemical entity formed by the coordination of a compound to a metal ion at two (or more) points.
  • non-covalent complex refers to the chemical entity formed by the interaction of a compound and another molecule wherein a covalent bond is not formed between the compound and the molecule. For example, complexation can occur through van der Waals interactions, hydrogen bonding, and electrostatic interactions (also called ionic bonding).
  • an “active agent” is used to indicate a chemical entity which has biological activity.
  • an “active agent” is a compound having pharmaceutical utility.
  • an active agent may be an anti-cancer therapeutic.
  • a therapeutically effective amount of a chemical entity of this invention means an amount effective, when administered to a human or non-human patient, to provide a therapeutic benefit such as amelioration of symptoms, slowing of disease progression, or prevention of disease e.g., a therapeutically effective amount may be an amount sufficient to decrease the symptoms of a disease responsive to Btk inhibition. In some embodiments, a therapeutically effective amount is an amount sufficient to reduce cancer symptoms, the symptoms of an allergic disorder, the symptoms of an autoimmune and/or inflammatory disease, or the symptoms of an acute inflammatory reaction. In some embodiments a therapeutically effective amount is an amount sufficient to decrease the number of detectable cancerous cells in an organism, detectably slow, or stop the growth of a cancerous tumor.
  • a therapeutically effective amount is an amount sufficient to shrink a cancerous tumor. In certain circumstances a patient suffering from cancer may not present symptoms of being affected.
  • a therapeutically effective amount of a chemical entity is an amount sufficient to prevent a significant increase or significantly reduce the detectable level of cancerous cells or cancer markers in the patient's blood, serum, or tissues.
  • a therapeutically effective amount may also be an amount sufficient, when administered to a patient, to detectably slow progression of the disease, or prevent the patient to whom the chemical entity is given from presenting symptoms of the allergic disorders and/or autoimmune and/or inflammatory disease, and/or acute inflammatory response, hi certain methods described herein for treating allergic disorders and/or autoimmune and/or inflammatory diseases and/or acute inflammatory reactions, a therapeutically effective amount may also be an amount sufficient to produce a detectable decrease in the amount of a marker protein or cell type in the patient's blood or serum.
  • immunoglobulin classes i.e., IgG, IgA, IgM, IgD, and IgE
  • Antibodies to a given antigen may be detected in all or several classes of immunoglobulins or may be restricted to a single class or subclass of immunoglobulin.
  • Autoantibodies or autoimmune antibodies may likewise belong to one or several classes of immunoglobulins.
  • rheumatoid factors antibodies to IgG are most often recognized as an IgM immunoglobulin, but can also consist of IgG or IgA.
  • Inhibition of B-cell proliferation also refers to observable inhibition of
  • An "allergy” or “allergic disorder” refers to acquired hypersensitivity to a substance (allergen). Allergic conditions include eczema, allergic rhinitis or coryza, hay fever, bronchial asthma, urticaria (hives) and food allergies, and other atopic conditions.
  • Patient refers to an animal, such as a mammal, that has been or will be the object of treatment, observation or experiment.
  • the methods of the invention can be useful in both human therapy and veterinary applications.
  • the patient is a mammal; in some embodiments the patient is human; and in some embodiments the patient is chosen from cats and dogs.
  • the invention provides at least one chemical entity chosen from compounds of Formula 1 :
  • R 1 is chosen from optionally substituted phenylene, optionally substituted pyridylidene, optionally 2-oxo-l,2-dihydropyridinyl,
  • G is chosen from hydrogen, halo, hydroxy, alkoxy, nitro, optionally substituted alkyl, -NRi 6 R 17 , optionally substituted heterocycloalkyl, optionally substituted cycloalkyl, optionally substituted aryl, and optionally substituted heteroaryl
  • R 10 and R 11 are independently chosen from hydrogen, C 1 -C 6 alkyl, and C 1 -C 6 haloalkyl;
  • R 5 is chosen from optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl and optionally substituted heteroaryl; and
  • R 6 is chosen from hydrogen, optionally substituted alkyl, cycloalkyl, and heterocycloalkyl.
  • A is a covalent bond.
  • R 12 , R 13 , R 14 , and Ri 5 are independently chosen from hydrogen, Ci-C 6 alkyl, Ci-C 6 haloalkyl, and phenyl.
  • Ri 3 is chosen from hydrogen and Ci-C 6 alkyl.
  • Q is wherein R 13 is chosen from hydrogen and C 1 -C 6 alkyl.
  • 2H-pyrazol-3-yl substituted 2H-pyrazol-3-yl chosen from mono-, di-, and tri-substituted 2H- pyrazol-3-yl wherein the substituents are independently chosen from hydroxy, lower alkyl, sulfonyl, halo, lower alkoxy, and heteroaryl,
  • [l,2,3]thiadiazol-4-yl substituted [l,2,3]thiadiazol-4-yl chosen from mono-, di-, and tri-substituted [l,2,3]thiadiazol-4-yl wherein the substituents are independently chosen from hydroxy, lower alkyl, sulfonyl, halo, lower alkoxy, and heteroaryl, isoxazol-5-yl, substituted isoxazol-5-yl chosen from mono-, di-, and tri-substituted isoxazol- 5-yl wherein the substituents are independently chosen from hydroxy, lower alkyl, sulfonyl, halo, lower alkoxy, and heteroaryl,
  • R 5 is chosen from phenyl and substituted phenyl wherein substituted phenyl is chosen from mono-, di-, and tri-substituted phenyl wherein the substituents are independently chosen from hydroxy, lower alkyl, sulfanyl, sulfonyl, optionally substituted amino, lower alkoxy, lower alkyl substituted with one or more halo, lower alkoxy substituted with one or more halo, lower alkyl substituted with hydroxy, and heteroaryl.
  • R 5 is substituted phenyl chosen from mono-, di-
  • R 1 is chosen from ortho-phenylene, meta- phenylene, para-phenylene, ortho-pyridylidene, meta-pyridylidene, para-pyridylidene,
  • G is chosen from hydrogen, hydroxy,
  • G is chosen from hydrogen, hydroxy,
  • G is chosen from hydrogen, morpholin-4-yl,
  • G is chosen from -NR 16 R 17 , and optionally substituted heterocycloalkyl. In certain embodiments, G is chosen from optionally substituted morpholin-4-yl and optionally substituted piperazin-1-yl. In certain embodiments, G is morpholin-4-yl.
  • R 9 is chosen from hydrogen and lower alkyl. In some embodiments, R 9 is chosen from hydrogen and methyl. [00104] In some embodiments, R 6 is hydrogen.
  • R 2 is chosen from methyl, trifluoromethyl, difluoromethyl, methoxy, trifluoromethoxy, difluoromethoxy, and fluoro. In some embodiments, R 2 is methyl. In some embodiments, R 3 and R 4 are hydrogen. [00106] In some embodiments, R 3 is chosen from methyl, trifluoromethyl, difluoromethyl, methoxy, trifluoromethoxy, difluoromethoxy, and fluoro. In some embodiments, R 3 is methyl. In some embodiments, R 2 and R 4 are hydrogen.
  • R 4 is chosen from methyl, trifluoromethyl, difluoromethyl, methoxy, trifluoromethoxy, difluoromethoxy, and fluoro. In some embodiments, R 4 is methyl. In some embodiments, R 2 and R 3 are hydrogen. [00108] In some embodiments, T, V, and W are C and U is -CH.
  • R 20 represents 0 to 3 substituents independently chosen from hydroxy, nitro, cyano, amino, halo, C 1 -C 6 alkyl, C 1 -C 2 haloalkyl, C 1 -C 2 haloalkoxy, C 1 -C 6 alkoxy, HiOnO-(C 1 -C 4 alkyl)amino, di-(C 1 -C 4 alkyl)amino, and amino(C 1 -C 4 alkyl).
  • R 2 o is absent.
  • R 19 is chosen from hydrogen, hydroxy, lower alkyl, sulfonyl, optionally substituted amino, lower alkoxy, lower alkyl substituted with one or more halo, lower alkoxy substituted with one or more halo, lower alkyl substituted with hydroxy, and heteroaryl; and
  • 6-yl ⁇ -phenyl)-4-methylsulfanyl-benzamide 4-(lH-Imidazol-2-yl)-N-(2-niethyl-3- ⁇ 8-[4-(niorpholine-4-carbonyl)-phenylamino]- imidazo[ 1 ,2-a]pyrazin-6-yl ⁇ -phenyl)-benzamide; 4-tert-Butyl-N-(2-metliyl-3- ⁇ 8-[4-(lH-tetrazol-5-yl)- ⁇ henylamino]-imidazo[l,2- a]pyrazin-6-yl ⁇ -phenyl)-benzamide; 4-Methanesulfonyl-N-(2-methyl-3- ⁇ 8-[4-(morpholine-4-carbonyl)-phenylamino]- imidazo[ 1 ,2-a]pyrazin-6-yl ⁇ -phenyl)-benzamide; 2-Hydroxy-6-
  • Step 1 a mixture of a compound of
  • Formula 108 an excess (such as about 1.2 equivalents) of a compound of Formula 107, and a catalyst such as palladium tetrakis(triphenylphosphine) in aqueous base (such as IN aqueous sodium carbonate and an inert solvent such as DME is heated at about 95 0 C in a sealed tube for about 16h.
  • a catalyst such as palladium tetrakis(triphenylphosphine) in aqueous base (such as IN aqueous sodium carbonate and an inert solvent such as DME is heated at about 95 0 C in a sealed tube for about 16h.
  • a catalyst such as palladium tetrakis(triphenylphosphine) in aqueous base (such as IN aqueous sodium carbonate and an inert solvent such as DME is heated at about 95 0 C in a sealed tube for about 16h.
  • the product, a compound of formula 109 is isolated and purified.
  • abase such as triethylamine
  • a nonpolar, aprotic solvent such as dichloromethane.
  • Formula 105 and an amine base such as diisopropylethylamine in a polar, aprotic solvent such as dichloromethane is added a compound of Formula 503 where X is a leaving group (such as a halide).
  • X is a leaving group (such as a halide).
  • the resulting solution is stirred under nitrogen at room temperature or with heat for several hours.
  • the product, a compound of Formula 505 is isolated and purified.
  • a compound of Formula 105 is treated with a slight excess of an isocyanate of Formula 603 in the presence of a base, such as triethylamine, in a nonpolar, aprotic solvent, such as dichloromethane.
  • a base such as triethylamine
  • a nonpolar, aprotic solvent such as dichloromethane.
  • the product, a compound of Formula 605 is isolated and purified.
  • Reaction Scheme 6, Step 2 a mixture of a compound of
  • a compound of Formula 109 wherein G is alkoxy can be converted to a compound of Formula 1 wherein G is hydroxy by treatment with aqueous base.
  • a compound of Formula 109 wherein G is hydroxy can be converted to a compound of Formula 1 wherein G is optionally substituted amino by treatment with the appropriate amine, optionally, in the presence of a catalyst.
  • Other transformations, for example, reductions, alkylations, acylations, and the like, are well known and within the skill of those in the art.
  • the chemical entities described herein are administered as a pharmaceutical composition or formulation.
  • the invention provides pharmaceutical formulations comprising at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, together with at least one pharmaceutically acceptable vehicle chosen from carriers, adjuvants, and excipients.
  • Pharmaceutically acceptable vehicles must be of sufficiently high purity and sufficiently low toxicity to render them suitable for administration to the animal being treated.
  • the vehicle can be inert or it can possess pharmaceutical benefits.
  • the amount of vehicle employed in conjunction with the chemical entity is sufficient to provide a practical quantity of material for administration per unit dose of the chemical entity.
  • Exemplary pharmaceutically acceptable carriers or components thereof are sugars, such as lactose, glucose and sucrose; starches, such as corn starch and potato starch; cellulose and its derivatives, such as sodium carboxymethyl cellulose, ethyl cellulose, and methyl cellulose; powdered tragacanth; malt; gelatin; talc; solid lubricants, such as stearic acid and magnesium stearate; calcium sulfate; synthetic oils; vegetable oils, such as peanut oil, cottonseed oil, sesame oil, olive oil, and corn oil; polyols such as propylene glycol, glycerine, sorbitol, mannitol, and polyethylene glycol; alginic acid; phosphate buffer solutions; emulsifiers, such as the TWEENS; wetting agents, such sodium lauryl sulfate; coloring agents; flavoring agents; tableting agents; stabilizers; antioxidants; preservatives; pyrogen-free water; iso
  • Optional active agents may be included in a pharmaceutical composition, which do not substantially interfere with the activity of the chemical entity of the present invention.
  • Effective concentrations of at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, are mixed with a suitable pharmaceutical acceptable vehicle.
  • methods for solubilizing compounds may be used. Such methods are known to those of skill in this art, and include, but are not limited to, using cosolvents, such as dimethylsulfoxide (DMSO), using surfactants, such as TWEEN, or dissolution in aqueous sodium bicarbonate.
  • DMSO dimethylsulfoxide
  • surfactants such as TWEEN
  • dissolution in aqueous sodium bicarbonate dissolution in aqueous sodium bicarbonate.
  • the resulting mixture may be a solution, suspension, emulsion or the like. The form of the resulting mixture depends upon a number of factors, including the intended mode of administration and the solubility of the chemical entity in the chosen vehicle.
  • the effective concentration sufficient for ameliorating the symptoms of the disease treated
  • Chemical entities described herein may be administered orally, topically, parenterally, intravenously, by intramuscular injection, by inhalation or spray, sublingually, transdermally, via buccal administration, rectally, as an ophthalmic solution, or by other means, in dosage unit formulations.
  • Dosage formulations suitable for oral use include, for example, tablets, troches, lozenges, aqueous or oily suspensions, dispersible powders or granules, emulsions, hard or soft capsules, or syrups or elixirs.
  • compositions intended for oral use may be prepared according to any method known to the art for the manufacture of pharmaceutical compositions and such compositions may contain one or more agents, such as sweetening agents, flavoring agents, coloring agents and preserving agents, in order to provide pharmaceutically elegant and palatable preparations.
  • oral formulations contain from 0.1 to 99% of at least one chemical entity described herein, hi some embodiments, oral formulations contain at least 5% (weight %) of at least one chemical entity described herein. Some embodiments contain from 25% to 50% or from 5% to 75 % of at least one chemical entity described herein.
  • Orally administered compositions also include liquid solutions, emulsions, suspensions, powders, granules, elixirs, tinctures, syrups, and the like.
  • the pharmaceutically acceptable carriers suitable for preparation of such compositions are well known in the art.
  • Oral formulations may contain preservatives, flavoring agents, sweetening agents, such as sucrose or saccharin, taste-masking agents, and coloring agents.
  • Typical components of carriers for syrups, elixirs, emulsions and suspensions include ethanol, glycerol, propylene glycol, polyethylene glycol, liquid sucrose, sorbitol and water.
  • Syrups and elixirs may be formulated with sweetening agents, for example glycerol, propylene glycol, sorbitol or sucrose.
  • Such formulations may also contain a demulcent.
  • Chemical entities described herein can be incorporated into oral liquid preparations such as aqueous or oily suspensions, solutions, emulsions, syrups, or elixirs, for example. Moreover, formulations containing these chemical entities can be presented as a dry product for constitution with water or other suitable vehicle before use.
  • Such liquid preparations can contain conventional additives, such as suspending agents (e.g., sorbitol syrup, methyl cellulose, glucose/sugar, syrup, gelatin, hydroxyethyl cellulose, carboxymethyl cellulose, aluminum stearate gel, and hydrogenated edible fats), emulsifying agents (e.g., lecithin, sorbitan monsoleate, or acacia), non-aqueous vehicles, which can include edible oils (e.g., almond oil, fractionated coconut oil, silyl esters, propylene glycol and ethyl alcohol), and preservatives (e.g., methyl or propyl p-hydroxybenzoate and sorbic acid).
  • suspending agents e.g., sorbitol syrup, methyl cellulose, glucose/sugar, syrup, gelatin, hydroxyethyl cellulose, carboxymethyl cellulose, aluminum stearate gel, and hydrogenated edible fats
  • emulsifying agents e.g.
  • typical suspending agents include methylcellulose, sodium carboxymethyl cellulose, AVICEL RC-591, tragacanth and sodium alginate; typical wetting agents include lecithin and polysorbate 80; and typical preservatives include methyl paraben and sodium benzoate.
  • Aqueous suspensions contain the active material(s) in admixture with excipients suitable for the manufacture of aqueous suspensions.
  • excipients are suspending agents, for example sodium carboxymethylcellulose, methylcellulose, hydropropylmethylcellulose, sodium alginate, polyvinylpyrrolidone, gum tragacanth and gum acacia; dispersing or wetting agents; may be a naturally-occurring phosphatide, for example, lecithin, or condensation products of an alkylene oxide with fatty acids, for example polyoxyethylene stearate, or condensation products of ethylene oxide with long chain aliphatic alcohols, for example heptadecaethyleneoxycetanol, or condensation products of ethylene oxide with partial esters derived from fatty acids and a hexitol such as polyoxyethylene sorbitol substitute, or condensation products of ethylene oxide with partial esters derived from fatty acids and hexitol anhydrides, for example polyethylene sorbitan substitute
  • Oily suspensions may be formulated by suspending the active ingredients in a vegetable oil, for example peanut oil, olive oil, sesame oil or coconut oil, or in a mineral oil such as liquid paraffin.
  • the oily suspensions may contain a thickening agent, for example beeswax, hard paraffin or cetyl alcohol.
  • Sweetening agents such as those set forth above, and flavoring agents may be added to provide palatable oral preparations.
  • These compositions may be preserved by the addition of an anti-oxidant such as ascorbic acid.
  • compositions of the invention may also be in the form of oil-in- water emulsions.
  • the oily phase may be a vegetable oil, for example olive oil or peanut oil, or a mineral oil, for example liquid paraffin or mixtures of these.
  • Suitable emulsifying agents may be naturally-occurring gums, for example gum acacia or gum tragacanth, naturally-occurring phosphatides, for example soy bean, lecithin, and esters or partial esters derived from fatty acids and hexitol, anhydrides, for example sorbitan monoleate, and condensation products of the said partial esters with ethylene oxide, for example polyoxyethylene sorbitan monoleate.
  • Dispersible powders and granules suitable for preparation of an aqueous suspension by the addition of water provide the active ingredient in admixture with a dispersing or wetting agent, suspending agent and one or more preservatives.
  • a dispersing or wetting agent e.g., kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, kaolin, ka
  • Tablets typically comprise conventional pharmaceutically acceptable adjuvants as inert diluents, such as calcium carbonate, sodium carbonate, mannitol, lactose and cellulose; binders such as starch, gelatin and sucrose; disintegrants such as starch, alginic acid and croscarmelose; lubricants such as magnesium stearate, stearic acid and talc. Glidants such as silicon dioxide can be used to improve flow characteristics of the powder mixture. Coloring agents, such as the FD&C dyes, can be added for appearance. Sweeteners and flavoring agents, such as aspartame, saccharin, menthol, peppermint, and fruit flavors, can be useful adjuvants for chewable tablets. Capsules (including time release and sustained release formulations) typically comprise one or more solid diluents disclosed above. The selection of carrier components often depends on secondary considerations like taste, cost, and shelf stability.
  • compositions may also be coated by conventional methods, typically with pH or time-dependent coatings, such that the chemical entity is released in the gastrointestinal tract in the vicinity of the desired topical application, or at various times to extend the desired action.
  • dosage forms typically include, but are not limited to, one or more of cellulose acetate phthalate, polyvinylacetate phthalate, hydroxypropyl methylcellulose phthalate, ethyl cellulose, Eudragit coatings, waxes and shellac.
  • Formulations for oral use may also be presented as hard gelatin capsules wherein the active ingredient is mixed with an inert solid diluent, for example, calcium carbonate, calcium phosphate or kaolin, or as soft gelatin capsules wherein the active ingredient is mixed with water or an oil medium, for example peanut oil, liquid paraffin or olive oil.
  • an inert solid diluent for example, calcium carbonate, calcium phosphate or kaolin
  • water or an oil medium for example peanut oil, liquid paraffin or olive oil.
  • compositions may be in the form of a sterile injectable aqueous or oleaginous suspension.
  • This suspension may be formulated according to the known art using those suitable dispersing or wetting agents and suspending agents that have been mentioned above.
  • the sterile injectable preparation may also be sterile injectable solution or suspension in a non-toxic parentally acceptable vehicle, for example as a solution in 1,3-butanediol.
  • a non-toxic parentally acceptable vehicle for example as a solution in 1,3-butanediol.
  • the acceptable vehicles that may be employed are water, Ringer's solution, and isotonic sodium chloride solution.
  • sterile, fixed oils are conventionally employed as a solvent or suspending medium.
  • any bland fixed oil may be employed including synthetic mono- or diglycerides.
  • fatty acids such as oleic acid can be useful in the preparation of injectables.
  • Chemical entities described herein may be administered parenterally in a sterile medium.
  • Parenteral administration includes subcutaneous injections, intravenous, intramuscular, intrathecal injection or infusion techniques. Chemical entities described herein, depending on the vehicle and concentration used, can either be suspended or dissolved in the vehicle.
  • adjuvants such as local anesthetics, preservatives and buffering agents can be dissolved in the vehicle.
  • the carrier comprises at least 90% by weight of the total composition.
  • the carrier for parenteral administration is chosen from propylene glycol, ethyl oleate, pyrrolidone, ethanol, and sesame oil.
  • Chemical entites described herein may also be administered in the form of suppositories for rectal administration of the drug.
  • These compositions can be prepared by mixing the drug with a suitable non-irritating excipient that is solid at ordinary temperatures but liquid at rectal temperature and will therefore melt in the rectum to release the drug.
  • suitable non-irritating excipient include cocoa butter and polyethylene glycols.
  • Chemical entities described herein may be formulated for local or topical application, such as for topical application to the skin and mucous membranes, such as in the eye, in the form of gels, creams, and lotions and for application to the eye.
  • Topical compositions may be in any form including, for example, solutions, creams, ointments, gels, lotions, milks, cleansers, moisturizers, sprays, sldn patches, and the like.
  • Such solutions may be formulated as 0.01% -10% isotonic solutions, pH 5-7, with appropriate salts.
  • Chemical entities described herein may also be formulated for transdermal administration as a transdermal patch.
  • Topical compositions comprising at least one chemical entity described herein can be admixed with a variety of carrier materials well known in the art, such as, for example, water, alcohols, aloe vera gel, allantoin, glycerine, vitamin A and E oils, mineral oil, propylene glycol, PPG-2 myristyl propionate, and the like.
  • compositions suitable for use in topical carriers include, for example, emollients, solvents, humectants, thickeners and powders. Examples of each of these types of materials, which can be used singly or as mixtures of one or more materials, are as follows:
  • Representative emollients include stearyl alcohol, glyceryl monoricinoleate, glyceryl monostearate, propane- 1,2-diol, butane- 1, 3 -diol, mink oil, cetyl alcohol, iso-propyl isostearate, stearic acid, iso-butyl palmitate, isocetyl stearate, oleyl alcohol, isopropyl laurate, hexyl laurate, decyl oleate, octadecan-2-ol, isocetyl alcohol, cetyl palmitate, dimethylpolysiloxane, di-n-butyl sebacate, iso-propyl myristate, iso-propyl palmitate, iso-propyl stearate, butyl stearate, polyethylene glycol, Methylene glycol, lanolin, sesame oil, coconut oil, arachis oil, castor oil,
  • compositions useful for attaining systemic delivery of the chemical entity include sublingual, buccal and nasal dosage forms. Such compositions typically comprise one or more of soluble filler substances such as sucrose, sorbitol and mannitol, and binders such as acacia, microcrystalline cellulose, carboxymethyl cellulose, and hydroxypropyl methylcellulose. Glidants, lubricants, sweeteners, colorants, antioxidants and flavoring agents disclosed above may also be included.
  • compositions for inhalation typically can be provided in the form of a solution, suspension or emulsion that can be administered as a dry powder or in the form of an aerosol using a conventional propellant (e.g., dichlorodifluoromethane or trichlorofluoromethane) .
  • a conventional propellant e.g., dichlorodifluoromethane or trichlorofluoromethane
  • compositions of the present invention may also optionally comprise an activity enhancer.
  • the activity enhancer can be chosen from a wide variety of molecules that function in different ways to enhance or be independent of therape ⁇ tic effects of the chemical entities described herein. Particular classes of activity enhancers include skin penetration enhancers and absorption enhancers.
  • Pharmaceutical compositions of the invention may also contain additional active agents that can be chosen from a wide variety of molecules, which can function in different ways to enhance the therapeutic effects of at least one chemical entity described herein. These optional other active agents, when present, are typically employed in the compositions of the invention at a level ranging from 0.01% to 15%. Some embodiments contain from 0.1% to 10% by weight of the composition. Other embodiments contain from 0.5% to 5% by weight of the composition.
  • the invention includes packaged pharmaceutical formulations.
  • packaged formulations include a pharmaceutical composition comprising at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, and instructions for using the composition to treat a mammal (typically a human patient).
  • the instructions are for using the pharmaceutical composition to treat a patient suffering from a disease responsive to inhibition of Btk activity and/ or inhibition of B-cell proliferation.
  • the invention can include providing prescribing information; for example, to a patient or health care provider, or as a label in a packaged pharmaceutical formulation. Prescribing information may include for example efficacy, dosage and administration, contraindication and adverse reaction information pertaining to the pharmaceutical formulation.
  • chemical entities can be administered alone, as mixtures, or in combination with other active agents.
  • the invention includes a method of treating a mammal, for example, a human, having a disease responsive to inhibition of Btk activity, comprising administrating to the mammal having such a disease, an effective amount of at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof.
  • Methods of treatment also include inhibiting Btk activity and/ or inhibiting B-cell proliferation, by inhibiting ATP binding or hydrolysis by Btk or by some other mechanism, in vivo, in a patient suffering from a disease responsive to inhibition of Btk activity, by administering an effective concentration of at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, to inhibit Btk activity in vitro.
  • An effective concentration may be ascertained experimentally, for example by assaying blood concentration of the chemical entity, or theoretically, by calculating bioavailability.
  • the invention includes a method of treating a patient having cancer, an autoimmune and/or inflammatory disease, or an acute inflammatory reaction, by administering an effective amount of at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof.
  • the condition responsive to inhibition of Btk activity and/ or B-cell proliferation is cancer, an autoimmune and/or inflammatory disease, or an acute inflammatory reaction.
  • the conditions and diseases that can be affected using chemical entities described herein include, but are not limited to: .autoimmune and/or inflammatory diseases, including but not limited to psoriasis, allergy, Crohn's disease, irritable bowel syndrome, Sjogren's disease, tissue graft rejection, and hyperacute rejection of transplanted organs, asthma, systemic lupus erythematosus (and associated glomerulonephritis), dermatomyositis, multiple sclerosis, scleroderma, vasculitis (ANCA-associated and other vasculitides), autoimmune hemolytic and thrombocytopenic states, Goodpasture's syndrome (and associated glomerulonephritis and pulmonary hemorrhage), atherosclerosis, rheumatoid arthritis, chronic Idiopathic thrombocytopenic purpura (ITP), Addison's disease, Parkinson's disease, Alzheimer's disease, diabetes, septic shock
  • Btk is a known inhibitor of apoptosis in lymphoma B-cells. Defective apoptosis contributes to the pathogenesis and drug resistance of human leukemias and lymphomas.
  • a method of promoting or inducing apoptosis in cells expressing Btk comprising contacting the cell with at least one chemical entity chosen from compounds of Formula 1 pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof.
  • the invention provides methods of treatment in which at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, is the only active agent given to a patient and also includes methods of treatment in which at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, is given to a patient in combination with one or more additional active agents.
  • the invention provides a method of treating cancer, an autoimmune and/or inflammatory disease, or an acute inflammatory reaction, which comprises administering to a mammal in need thereof an effective amount of at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, together with a second active agent, which can be useful for treating a cancer, an autoimmune and/or inflammatory disease, or an acute inflammatory reaction.
  • the second agent may be an anti-inflammatory agent.
  • Treatment with the second active agent may be prior to, concomitant with, or following treatment with at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof.
  • at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof is combined with another active agent in a single dosage form.
  • Suitable antitumor therapeutics that may be used in combination with at least one chemical entity described herein include, but are not limited to chemotherapeutic agents, for example mitomycin C, carboplatin, taxol, cisplatin, paclitaxel, etoposide, doxorubicin, or a combination comprising at least one of the foregoing chemotherapeutic agents. Radiotherapeutic antitumor agents may also be used, alone or in combination with chemotherapeutic agents. [00179] Chemical entities described herein can be useful as chemosensitizing agents, and, thus, can be useful in combination with other chemotherapeutic drugs, in particular, drugs that induce apoptosis.
  • a method for increasing sensitivity of cancer cells to chemotherapy comprising administering to a patient undergoing chemotherapy a chemotherapeutic agent together with at least one chemical entity chosen from compounds of Formula 1 and pharmaceutically acceptable salts, solvates, crystal forms, chelates, non-covalent complexes, prodrugs, and mixtures thereof, in an amount sufficient to increase the sensitivity of cancer cells to the chemotherapeutic agent is also provided herein.
  • chemotherapeutic drugs that can be used in combination with chemical entities described herein include topoisomerase I inhibitors (camptothesin or topotecan), topoisomerase II inhibitors (e.g. daunomycin and etoposide), alkylating agents (e.g.
  • cyclophosphamide melphala ⁇ and BCNU
  • tubulin directed agents e.g. taxol and vinblastine
  • biological agents e.g. antibodies such as anti CD20 antibody, IDEC 8, immunotoxins, and cytokines.
  • Anti-inflammatory agents include but are not limited to NSAIDs, non-specific and COX- 2 specific cyclooxgenase enzyme inhibitors, gold compounds, corticosteroids, methotrexate, tumor necrosis factor receptor (TNF) receptors antagonists, immunosuppressants and methotrexate.
  • NSAIDs include, but are not limited to ibuprofen, flurbiprofen, naproxen and naproxen sodium, diclofenac, combinations of diclofenac sodium and misoprostol, sulindac, oxaprozin, diflunisal, piroxicam, indomethacin, etodolac, fenoprofen calcium, ketoprofen, sodium nabumetone, sulfasalazine, tolmetin sodium, and hydroxychloroquine.
  • NSAIDs also include COX-2 specific inhibitors (i.e., a compound that inhibits COX-2 with an IC 50 that is at least 50-fold lower than the IC 50 for COX-I) such as celecoxib, valdecoxib, lumiracoxib, etoricoxib and/or rofecoxib.
  • COX-2 specific inhibitors i.e., a compound that inhibits COX-2 with an IC 50 that is at least 50-fold lower than the IC 50 for COX-I
  • celecoxib valdecoxib
  • lumiracoxib etoricoxib
  • etoricoxib etoricoxib
  • rofecoxib rofecoxib
  • the anti-inflammatory agent is a salicylate.
  • Salicylates include by are not limited to acetylsalicylic acid or aspirin, sodium salicylate, and choline and magnesium salicylates.
  • the anti-inflammatory agent may also be a corticosteroid.
  • the corticosteroid may be chosen from cortisone, dexamethasone, methylprednisolone, prednisolone, prednisolone sodium phosphate, and prednisone.
  • the anti-inflammatory therapeutic agent is a gold compound such as gold sodium thiomalate or auranof ⁇ n.
  • the invention also includes embodiments in which the anti ⁇ inflammatory agent is a metabolic inhibitor such as a dihydrofolate reductase inhibitor, such as methotrexate or a dihydroorotate dehydrogenase inhibitor, such as leflunomide.
  • a metabolic inhibitor such as a dihydrofolate reductase inhibitor, such as methotrexate or a dihydroorotate dehydrogenase inhibitor, such as leflunomide.
  • At least one anti-inflammatory compound is an anti-C5 monoclonal antibody (such as ec ⁇ lizumab or pexelizumab), a TNF antagonist, such as entanercept, or infliximab, which is an anti-TNF alpha monoclonal antibody.
  • an anti-C5 monoclonal antibody such as ec ⁇ lizumab or pexelizumab
  • TNF antagonist such as entanercept, or infliximab
  • Still other embodiments of the invention pertain to combinations in which at least one active agent is an immunosuppressant compound such as methotrexate, leflunomide, cyclosporine, tacrolimus, azathioprine, or mycophenolate mofetil.
  • an immunosuppressant compound such as methotrexate, leflunomide, cyclosporine, tacrolimus, azathioprine, or mycophenolate mofetil.
  • Dosage levels of the order for example, of from 0.1 mg to 140 mg per kilogram of body weight per day can be useful in the treatment of the above- indicated conditions (0.5 mg to 7 g per patient per day).
  • the amount of active ingredient that may be combined with the vehicle to produce a single dosage form will vary depending upon the host treated and the particular mode of administration. Dosage unit forms will generally contain from 1 mg to 500 mg of an active ingredient. Frequency of dosage may also vary depending on the compound used and the particular disease treated. In some embodiments, for example, for the treatment of autoimmune and/or inflammatory, a dosage regimen of 4 times daily or less is used. In some embodiments, a dosage regimen of 1 or 2 times daily is used.
  • a labeled form of a compound of the invention can be used as a diagnostic for identifying and/or obtaining compounds that have the function of modulating an activity of a kinase as described herein.
  • the compounds of the invention may additionally be used for validating, optimizing, and standardizing bioassays.
  • label herein is meant that the compound is either directly or indirectly labeled with a label which provides a detectable signal, e.g., radioisotope, fluorescent tag, enzyme, antibodies, particles such as magnetic particles, chemiluminescent tag, or specific binding molecules, etc.
  • Specific binding molecules include pairs, such as biotin and streptavidin, digoxin and antidigoxin etc.
  • the complementary member would normally be labeled with a molecule which provides for detection, in accordance with known procedures, as outlined above.
  • the label can directly or indirectly provide a detectable signal.
  • Nicotinic acid (1.Og; 7.3mmol) is dissolved in a mixture of water
  • 6-tert-butyl-nicotinic acid 200mg; l.lmmol
  • Water (1OmL) is added and the mixture is filtered to give 6-tert-Butyl-nicotinic acid
  • Signaling kinase buffer 25 mM Tris-HCl, pH 7.5, 5 mM beta-glycerophosphate, 2 mM dithiothreitol, 0.1 mM Na 3 VO 4 , 10 mM MgCl 2
  • a master mix plus Btk enzyme is prepared containing IX Cell Signaling kinase buffer, 0.5 ⁇ M PTK Biotinylated peptide substrate 2, 0.01% BSA, and 50 ng/well Btk enzyme.
  • Btk enzyme is prepared as follows: full length human wildtype Btk (accession number NM-000061) with a C- terminal V5 and 6x His tag was subcloned into pFastBac vector for making baculovirus carrying this epitope-tagged Btk.
  • Generation of baculo virus was done based on Invitrogen's instructions detailed in its published protocol "Bac-toBac Baculovirus Expression Systems" (Cat. Nos. 10359-016 and 10608-016); Passage 3 virus was used to infect Sf9 cells to overexpress the recombinant Btk protein.
  • the Btk protein was then purified to homogeneity using Ni-NTA column.
  • the purity of the final protein preparation was greater than 95% based on the sensitive Sypro-Ruby staining.
  • a solution of 5 mM ATP is prepared in water from a 50 mM Stock that was adjusted to pH7.4 with IN NaOH.
  • a quantity of 1.25 ⁇ L of compounds in 5%DMSO is transferred to a 96-well 1 A area Costar polystyrene plate. Compounds are tested singly and with an 11 -point dose-responsive curve (starting concentration is 10 ⁇ M; 1 :2 dilution).
  • a quantity of 18.75 ⁇ L of master mix minus enzyme (as a negative control) and master mix plus enzyme is transferred to appropriate wells in 96-well 1 A area costar polystyrene plate.
  • a generalized procedure for a standard cellular Btk Kinase Assay that can be used to test compounds disclosed in this application is as follows. [00230] Ramos cells are incubated at a density of 0.5xl0 7 cells/ml in the presence of test compound for 1 hr at 37 °C. Cells are then stimulated by incubating with 10 ⁇ g/ml anti-human IgM F(ab) 2 for 5 minutes at 37 0 C. Cells are pelleted, lysed, and a protein assay is performed on the cleared lysate.
  • Equal protein amounts of each sample are subject to SDS-PAGE and western blotting with either anti- phosphoBtk(Tyr223) antibody (Cell Signaling Technology #3531) to assess Btk autophosphorylation or an anti-Btk antibody (BD Transduction Labs #611116) to control for total amounts of Btk in each lysate.
  • a generalized procedure for a standard cellular B-cell proliferation assay that can be used to test compounds disclosed in this application is as follows. [00232] B-cells are purified from spleens of 8-16 week old Balb/c mice using a
  • B-cell isolation kit (Miltenyi Biotech, Cat # 130-090-862). Testing compounds are diluted in 0.25% DMSO and incubated with 2.5 x 10 5 purified mouse splenic B-cells for 30 min prior to addition of lO ⁇ g/ml of an anti-mouse IgM antibody (Southern Biotechnology Associates Cat # 1022-01) in a final volume of 100 ⁇ l. Following 24 hr incubation, 1 ⁇ Ci 3 H-thymidine is added and plates are incubated an additional 36 hr prior to harvest using the manufacturer's protocol for SPA[ 3 H] thymidine uptake assay system (Amersham Biosciences # RPNQ 0130). SPA-bead based fluorescence is counted in a microbeta counter (Wallace Triplex 1450, Perkin Elmer).
  • T cells are purified from spleens of 8-16 week old Balb/c mice using a
  • Pan T cell isolation kit (Miltenyi Biotech, Cat # 130-090-861). Testing compounds are diluted in 0.25% DMSO and incubated with 2.5 x 10 5 purified mouse splenic T cells in a final volume of 100 ⁇ l in flat clear bottom plates precoated for 90 min at 37 0 C with 10 ⁇ g/ml each of anti-CD3 (BD # 553057) and anti-CD28 (BD # 553294) antibodies. Following 24 hr incubation, 1 ⁇ Ci 3 H-thymidine is added and plates incubated an additional 36 hr prior to harvest using the manufacturer's protocol for SPA[ 3 H] thymidine uptake assay system (Amersham Biosciences # RPNQ 0130). SPA-bead based fluorescence was counted in a microbeta counter (Wallace Triplex 1450, Perkin Elmer).
  • mice by red blood cell lysis (BD Pharmingen #555899). Testing compounds are diluted to 0.5% DMSO and incubated with 1.25 x 10 6 splenocytes in a final volume of 200 ⁇ l in flat clear bottom plates (Falcon 353072) for 60 min at 37 0 C. Cells are then stimulated with the addition of 15 ⁇ g/ml IgM (Jackson ImmunoResearch 115-006-020), and incubated for 24 hr at 37 0 C, 5% CO 2 . Following the 24 hr incubation, cells are transferred to conical bottom clear 96-well plates and pelleted by centrifugation at 1200 x g x 5 min.
  • IgM Jackson ImmunoResearch 115-006-020
  • Cells are preblocked by CD16/CD32 (BD Pharmingen #553142), followed by triple staining with CD19-FITC (BD Pharmingen #553785), CD86-PE (BD Pharmingen #553692), and 7AAD (BD Pharmingen #51-6898 IE). Cells are sorted on a BD FACSCalibur and gated on the CD19 + /7AAD " population. The levels of CD86 surface expression on the gated population is measured versus test compound concentration.
  • the following is a procedure for a standard B-ALL cell survival study using an XTT readout to measure the number of viable cells.
  • This assay can be used to test compounds disclosed in this applicationfor their ability to inhibit the survival of B-ALL cells in culture.
  • One human B-cell acute lymphoblastic leukemia line that can be used is SUP-B 15, a human Pre-B-cell ALL line that is available from the ATCC.
  • SUP-B 15 pre-B- ALL cells are plated in multiple 96-well microtiter plates in 100 ⁇ l of Iscove's media + 20% FBS at a concentration of 5 x 10 5 cells/ml. Test compounds are then added with a final cone, of 0.4% DMSO. Cells are incubated at 37°C with 5% CO 2 for up to 3 days. After 3 days cells are split 1 :3 into fresh 96-well plates containing the test compound and allowed to grow up to an additional 3 days. After each 24h period, 50 ul of an XTT solution (Roche) is added to one of the replicate 96-well plates and absorbance readings are taken at 2, 4 and 20 hours following manufacturer's directions. The reading taken with an OD for DMSO only treated cells within the linear range of the assay (0.5- 1.5) is then taken and the percentage of viable cells in the compound treated wells are measured versus the DMSO only treated cells.
  • Btk biochemical assay described herein (Example 9) and exhibit an IC 50 value less than or equal to 10 micromolar. Certain of those compounds exhibit an IC 50 value less than or equal to 1 micromolar. Certain of those compounds exhibit an IC 5O value less than or equal to 0.1 micromolar.
  • IC 5 0 value less than or equal to 10 micromolar. Certain of those compounds exhibit an IC 50 value less than or equal to 1 micromolar. Certain of those compounds exhibit an IC 50 value less than or equal to 500 nM in this assay.
  • Examples 1 to 8 are tested in an assay for inhibition of B cell activity (under the conditions described in Example 13), and exhibit an IC 50 value less than or equal to 10 micromolar. Certain of those compounds exhibit an IC 50 value less than or equal to 1 micromolar. Certain of those compounds exhibit an IC 5O value less than or equal to 500 nM in this assay. [00244] Some of the compounds disclosed in Examples 1 to 8 are tested in a B- cell leukemia cell survival assay (under the conditions described in Example 14), and exhibit an IC 50 value less than or equal to 10 micromolar. [00245] Some of the compounds disclosed in Examples 1 to 8 exhibit both biochemical and cell-based activity.
  • Examples 1 to 8 exhibit an IC 5O value less than or equal to 10 micromolar in the Btk biochemical assay described herein (Example 9) and an IC 50 value less than or equal to 10 micromolar in at least one of the cell-based assays (other than the T-cell assay) described herein (Example 10, 11, 13, or 14).
  • Certain of those compounds exhibit an IC 5O value less than or equal to 1 micromolar in the Btk biochemical assay described herein (Example 9) and an IC 50 value less than or equal to 10 micromolar in at least one of the cell-based assays (other than the T-cell assay) described herein (Example 10, 11, 13, or 14).
  • Certain of those compounds exhibit an IC 50 value less than or equal to 0.1 micromolar and an IC 50 value less than or equal to 10 micromolar in at least one of the cell-based assays (other than the T-cell assay) described herein (Example 10, 11, 13, or 14).
  • Certain of those compounds exhibiting both biochemical and cell- based activity do not inhibit T-cell proliferation.
  • some of the compounds disclosed in Examples 1 to 8 exhibit an IC 50 value less than or equal to 10 micromolar in the Btk biochemical assay described herein (Example 9), an IC 50 value less than or equal to 10 micromolar in at least one of the cell-based assays (other than the T-cell assay) described herein (Example 10, 11, 13, or 14) and an IC 50 value for inhibition of T-cell proliferation at least 3-fold greater than the IC 50 value for inhibition of B-cell proliferation.
  • Certain of those compounds exhibit an IC 50 value less than or equal to 1 micromolar in the Btk biochemical assay described herein (Example 9), an IC 50 value less than or equal to 10 micromolar in at least one of the cell-based assays (other than the T-cell assay) described herein (Example 10, 11, 13, or 14), and an IC 50 value for inhibition of T-cell proliferation at least 5-fold greater than the IC 50 value for inhibition of B-cell proliferation.

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Abstract

La présente invention concerne des entités chimiques sélectionnées dans le groupe des composés représentés par la formule générale (I), et certains de leurs sels, solvates, formes cristallines, chélats, complexes non-covalents, promédicaments, et leurs mélanges. L'invention concerne également des compositions chimiques comprenant au moins une entité représentée par la formule générale (I), associée à au moins un vecteur pharmaceutiquement admis parmi le adjuvants de vecteurs et les excipients. L'invention concerne aussi des traitements s'adressant à des patients atteints de certaines affections répondant à l'inhibition de l'activité Btk et/ou de la prolifération des lymphocytes B. L'invention concerne enfin des procédés permettant de déterminer la présence du Btk dans un échantillon.
PCT/US2005/040730 2004-11-10 2005-11-10 Certaines imidazo[1,2-a] pyrazin-8-ylamines et les procédés de fabrication et d'utilisation correspondants WO2006053121A2 (fr)

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RU2007121508A (ru) 2008-12-20
KR20070119606A (ko) 2007-12-20
BRPI0517619A (pt) 2008-10-14
IL183110A0 (en) 2007-09-20
CO6382177A2 (es) 2012-02-15
SG159549A1 (en) 2010-03-30
WO2006053121A3 (fr) 2007-04-26
AU2005304473A1 (en) 2006-05-18
US20060178367A1 (en) 2006-08-10
MX2007005643A (es) 2008-03-13

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